| Herteliana | |
|---|---|
 | |
| Herteliana gagei | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Ramalinaceae |
| Genus: | Herteliana P.James (1980) |
| Type species | |
| Herteliana taylorii (Salwey) P.James (1980) | |
| Species | |
H. alaskensis Contents | |
Herteliana is a genus of lichen-forming fungi. It contains four species of crustose lichens.
The genus was circumscribed by the lichenologist Peter Wilfred James in 1980. [1] The genus name honours the German teacher and lichenologist Hannes Hertel. [2]
James originally classified the genus in the family Lecideaceae, [2] but it has since been included in the Ramalinaceae (2017), [3] [4] and, more recently (2022), in the Cladoniaceae. [5] This is because in 2014, it was shown using molecular phylogenetics that Herteliana taylorii grouped together in a clade with Squamarina , and should thus be excluded from the Ramalinaceae and transferred elsewhere in the Lecanorales; the authors concomitantly recommended resurrecting the family Squamarinaceae (originally proposed by Josef Hafellner in 1984 [6] ) to contain Herteliana and Squamarina. [7] In 2018, Kraichuk and colleagues proposed to fold the Squamarinaceae into the Cladoniaceae, [8] a taxonomic suggestion that had been accepted by later authors. [3]
The original type species assigned by James, H. taylorii, is now considered synonymous with H. gagei . [9]
The thallus (the body of the lichen) of Herteliana is crust-like. The apothecia (fruiting bodies) can be either embedded within the thallus or sit directly on its surface, are spherical ( globose ), and have a distinct margin. The excipulum (the outer layer of the apothecium) is made up of tightly packed cells that resemble plant tissue ( pseudoparenchymatous ). The hypothecium (the layer below the spore-producing area) extends significantly and forms a root-like structure, and is nearly colourless. [1]
The paraphyses (sterile filaments within the apothecia) have swollen tips, are mostly unbranched, but sometimes they branch and reconnect. The asci (spore-producing sacs) resemble those in the genus Lecanora and typically contain eight spores. The ascospores are broadly spindle-shaped, simple (not divided by septa), and colourless. [1]
The pycnidia (structures that produce asexual spores) are embedded in the thallus, and the conidia (asexual spores) are formed at the tips, are sickle-shaped, simple, and colourless. [1]
The Cladoniaceae are a family of lichen-forming fungi in the order Lecanorales, comprising about 560 species distributed amongst 18 genera. This family is one of the largest among lichen-forming fungi and is globally distributed, from Arctic tundra to tropical rainforests, favouring humid environments while being intolerant of arid conditions. Molecular phylogenetics has significantly advanced the understanding of their complex taxonomic history, revealing intricate evolutionary relationships and leading to a refined classification. Notable members include reindeer moss and cup lichens of the genus Cladonia, which consist of about 500 species and forms a significant part of the diet for large mammals in taiga and tundra ecosystems.
The Lecanoraceae are a family of lichenized fungi in the order Lecanorales. Species of this family have a widespread distribution.
The Ramalinaceae are a family of lichen-forming fungi in the order Lecanorales. First proposed by Carl Adolph Agardh in 1821, the family now comprises 63 genera and about 750 species. Ramalinaceae lichens exhibit diverse growth forms, including crustose, fruticose, squamulose, leprose, and byssoid thalli, and form symbiotic relationships primarily with green algae of the genus Trebouxia. The family is characterised by pale-coloured thalli, apothecia that are typically pale but may darken with age, and ascospores that vary in shape and septation.
The Pertusariales are an order of fungi in the class Lecanoromycetes, comprising 8 families, 31 genera, and over 600 species, many of which form lichens. This diverse group is characterized by complex taxonomic history and ongoing phylogenetic revisions. Originally proposed by Maurice Choisy in 1949 and later formally published by the lichenologists David L. Hawksworth and Ove Eriksson in 1986, Pertusariales has undergone significant reclassification due to molecular phylogenetics studies. The order includes well-known genera such as Pertusaria and Ochrolechia, as well as families like Megasporaceae and Icmadophilaceae.
The Baeomycetales are an order of mostly lichen-forming fungi in the subclass Ostropomycetidae, in the class Lecanoromycetes. It contains 8 families, 33 genera and about 170 species. As a result of molecular phylogenetics research published in the late 2010s, several orders were folded into the Baeomycetales, resulting in a substantial increase in the number of taxa.
Ramalina is a genus of greenish fruticose lichens that grow in the form of flattened, strap-like branches. Members of the genus are commonly called strap lichens or cartilage lichens. Apothecia are lecanorine.
Cladia is a genus of lichen-forming fungi in the family Cladoniaceae. Cladia species have a crustose or squamulose (scaly) primary thallus and a fruticose, secondary thallus, often referred to as pseudopodetium. The type species of the genus, Cladia aggregata, is widely distributed, occurring in South America, South Africa, Australasia and South-East Asia to southern Japan and India. Most of the other species are found in the Southern Hemisphere.
Schadonia is a genus of lichen-forming fungi. Established by German lichenologist Gustav Wilhelm Körber in 1859, this genus of crustose lichens is characterised by its black, sessile apothecia, muriform ascospores, and growth on mosses, plant debris, and rocks in montane habitats. While traditionally placed in the family Ramalinaceae, recent studies have suggested its classification may be uncertain within the order Lecanorales, with some researchers proposing its placement in the Pilocarpaceae or the resurrection of the family Schadoniaceae. The genus currently comprises four recognised species.
Fuscideaceae is a family of fungi that form symbiotic] relationships with algae to create lichens. These lichens typically have a crust-like appearance and are found worldwide, though they are most common in temperate regions. The family includes five genera and about 55 species, which primarily grow on tree bark, rocks, or occasionally on wood or leaves. Fuscideaceae lichens are characterised by their reproductive structures, cup-like formations called apothecia, which can vary in colour from red to dark brown or black. The family has undergone several changes in its classification over the years, with recent genetic studies placing it within the order Umbilicariales. Fuscideaceae lichens produce various chemical compounds, some of which are unique to this family, and these chemicals are often used to help identify different species.
The Lecideaceae are a family of lichen-forming fungi in the order Lecideales. It contains about 30 genera and roughly 250 species. A major distinguishing characteristic of the family is the lecanoroid form of the fruiting bodies: typically circular, dark, and without a thalline margin. Most species in the family are lichenised with green algae, although a few species, scattered amongst several genera, are lichenicolous—they live on other lichens. Lecideaceae lichens tend to grow on rocks, wood, and soil. Several Lecideaceae species accelerate the weathering of rock surfaces, a process known as pedogenesis, by extending their hyphae into cracks and expelling rock flakes. This contributes to significantly faster weathering rates in certain environments, impacts various materials from natural rocks to man-made Sekishu roof tiles, and involves key biomolecules identified for survival and biodeterioration, including compounds to withstand intense ultraviolet radiation.
Immersaria is a genus of lichen-forming fungi in the family Lecideaceae. It has eight species of crustose lichens.
Porpidia is a genus of crustose lichens in the family Lecideaceae. Porpidia species primarily inhabit siliceous rocks, pebbles, and stonework, with rare occurrences on bark, wood, and compacted soil. The thallus, or body of the lichen, varies in appearance from thick and crusty to barely visible. It may form a continuous layer or develop cracks resulting in a segmented, areolate structure. The colour of the thallus ranges from grey and white to orange.
Rhizocarpon is a genus of crustose, saxicolous, lecideoid lichens in the family Rhizocarpaceae. The genus is common in arctic-alpine environments, but also occurs throughout temperate, subtropical, and even tropical regions. They are commonly known as map lichens because of the prothallus forming border-like bands between colonies in some species, like the common map lichen.
Megalaria is a genus of lichen-forming fungi in the family Ramalinaceae. It contains 44 species of crustose lichens, the majority of which grow on bark.
Trapeliaceae is a family of lichens in the order Baeomycetales. The family contains 12 genera and about 125 species.
Bilimbia is a genus of lichen-forming fungi in the family Ramalinaceae.
Schaereria is a genus of lichen-forming fungi. It is the sole genus in the family Schaereriaceae, which itself is the only family in the Schaereriales, an order in the subclass Ostropomycetidae of the class Lecanoromycetes. Most Schaereria species are crustose lichens that live on rocks. Schaereria was first proposed by Gustav Wilhelm Körber in 1855 and was later taken up by other lichenologists despite periods of disuse.
Hannes Hertel is a German lichenologist and taxonomist and was Director of the State Herbarium in Munich, Germany 1992–2004. His specialist areas are the fungi and lichens.
Piccolia is a small genus of crustose lichens in the class Lecanoromycetes. First circumscribed by Italian lichenologist Abramo Bartolommeo Massalongo in 1864, it contains ten species. Due to a lack of molecular data, it has not been assigned to an order or family.